Journal ArticleDOI
High Pressure Spectroscopic Studies of Hydrogen Bonding
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TLDR
In this article, a diamond-window high pressure cell has been used to study the effects of pressure on the OH stretching vibration of liquid alcohols, and the results show that while decreasing temperature changes the polymer equilibrium of hydrogen bonded systems, increasing pressure shortens the hydrogen bond or intermolecular distance without affecting the polymeric equilibrium.Abstract:
A diamond-window high pressure cell has been used to study the effects of pressure on the OH stretching vibration of liquid alcohols. The results of this study show that: (1) while decreasing temperature changes the polymer equilibrium of hydrogen bonded systems, increasing pressure shortens the hydrogen bond or intermolecular distance without affecting the polymer equilibrium; (2) the free OH absorption seen in these compounds arises from the OH end group of the hydrogen bonded polymer and not from monomeric molecules; and (3) the alcohols used in this study must be primarily linear polymers rather than cyclic hydrogen bonded structures and these chains must be fairly short otherwise the free OH end group absorption would not be observed.read more
Citations
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The relationship of bound water to the IR amide I bandwidth of albumin
TL;DR: Four different types of experiments, involving changes in pH, changes in pressure, and the use of nonaqueous solvents, support the hypothesis that the bandwidth of the amide I vibration of albumin is directly related to the amount of bound water in this protein.
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Vibrational studies of solid inorganic and coordination complexes at high pressures
Journal ArticleDOI
Interfacing a Diamond Anvil Cell with a Commercial Interferometer
John R. Ferraro,Louis J. Basile +1 more
TL;DR: In this paper, the versatility of the diamond anvil cell (DAC) in combination with optical and vibrational spectroscopy has been demonstrated, both as a microanalytical tool and as a pressure cell.
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Measurement of the Near-Infrared Spectra of H 2 O-SiOH-Bearing Siliceous Materials at High Pressures
TL;DR: In this paper, a modified diamond anvil cell, adapted to a single beam microspectrometer, was used to measure OH-combination bands of water and other OH-group bearing solid or liquid materials in the near-infrared (6000 to 4000 cm−1) at high pressures by means of a modified DBC.
References
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Journal ArticleDOI
Dielectric Study of Intermolecular Association in Isomeric Octyl Alcohols
TL;DR: In this article, a simple molecular model based on hydrogen-bond associative equilibria involving both ring dimers and linear chain n−mers is developed, and equilibrium constants for ring and chain formation are deduced, and it is concluded that entropic factors which can be correlated with the geometry of the molecules are the principal basis for differences between isomers.
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Hydrogen bonding in solid alcohols
TL;DR: In this article, a study of partially-deuterated liquid alcohols indicates that coupling plays only a small part in the v (OH) bandwidth in liquids and different mechanisms control the OH bandwidth in liquid and solid alcohols.
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High-pressure effects on organic liquids. Production and infrared spectra of single crystals☆
TL;DR: In this article, techniques for utilizing the elevation of freezing points with increasing pressures to produce, rapidly and simply, single crystals of pure organic compounds are described, which open a new field of solid-state spectroscopy.
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Polarized ir spectra of single crystals of propanoic acid
TL;DR: In this article, single crystals of propanoic acid were grown in a diamond-window cell under high pressure at room temperature and assignments of the bands were made taking the crystal structure into consideration.